Ladder.



No. 680,428. Patented Aug. 13, 190:.

. H. D. CARRYL.

LADDER. (Application fll ed Dec. 21, 1899. Renewed Mar. 18, 1901.) (NoModel.) 3 Sheets-Sheet l,

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WITNESSES 5 By his Aim nay No. 680.428. Patented Aug. l3, l90l.

H. D. GARRYL.

LADDER.

(Application filed Dec. 21, 1899. Renewed Mar. 18, 1901.) (No Model.) Y41" 3 Sheets-Sheet 2.

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LADDER.

(Applicltion film! Doc. 21, 1898. jmnewed Mar. 18, 1901.)

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UNITED STATEs ATnNT Fries.

HENRY DELANO OARRYL, OF NEW YORK, N. Y., ASSIGNOR TO JAMES R.

HAY, OF NUTLEY, NEW YORK.

LADDER.

SPECIFICATION forming part of Letters Patent No. 680,428, dated AugustApplication filed December 21,1899- Renewed March 18,1901- Serial No.51.768. (No model.)

To all whom it may concern.-

Be it known that I, HENRY DELANO CAR- RYL, a citizen of the UnitedStates, and a resident of. the borough of Manhattan, city, county, andState of New York, have invented a new and useful Improvement inLadders, of which the following is a specification.

My invention relates to improvements in scaffolds for use in connectionwith all classes of completed or uncompleted construction, and primarilyto that class of scaffolds which are used for the purposes of cleaningor painting surfaces in place.

It consists of a method or system of arranging ladders by means ofconvenient attachments and what are called turnbuckles, in such a way asto make a series of independent scaffolds which may be adjusted fromtime to time in any particular position in reference to the surface tobe treated, as may be necessary and convenient.

The invention will be best understood by reference to the accompanyingtwo sheets of drawings, forming a part of this specification, in which-Figure 1 is a front view of the scaffold set up, slightly inperspective. Fig. 2 is a plan view of the scafiold shown in Fig. 1. Fig.3 is a side elevation, shown in section on an enlarged scale, and istaken on the line 3 3, Fig. 1. Fig. 4 is a front elevation of Fig.3,showing the section-line 3 3 in this figure also.

Similar characters refer to similar parts throughout the views.

Letter A represents in each case a side of a ship, wall, or othersurface in place.

B and B represent two ordinary ladders of convenient size andconstruction, provided with a series of rungs b I), placed at anyconvenient distance apart. In the arrangement shown in Fig. 3 theladders are placed at an angle to the surface A in place, and in theform shown in Fig. 5 they are suspended against the surface or wall A bymeans of a suitable hook 1, attached, as therein shown, to the upperrung of the ladder. These ladders are termed supporting-ladders. Thescaffold or platform proper is composed of one or more auxiliaryhorizontal ladders C and C. These ladders are hereinafter termedauxiliary ladders. In Fig. 1 an arrangement of' scaffold with two suchladders is shown; but any convenient number may be employed. The upperauxiliary ladder C is arranged, as will be apparent from Fig. 3, on theouter surface of the supporting-ladders B and B, and the lower auxiliaryladder C is arranged upon the inner surface of the ladders B and B. Theupper auxiliary ladder is supported at either end from beneath by meansof two brackets D and D, provided at the lower extremity with thenotches d and d, which are respectively fitted over any one of the rungsb b of one of the supporting-ladders B and B and at the upper end largernotches to fit under the outer side piece of the ladder 0, thussupporting the outer side of the ladder C at either end, as shown inFig. 1. The inner side of the ladder O is attached to theappropriaterung of the ladders B and B at either end by means of thehooks 2. (Shown in Fig. 3.) By these means the upper auxiliary ladder Ccan be arranged to be held in a horizontal position on any two rungs ofeach of the supporting-ladders B and B, and consequently at any desiredheight.

According as the scafiold O is set upon the lower rungs of thesupporting-ladders l3 and B it will necessarily be moved farther awayfrom the surface to be treated, and obviously a point will benecessarily reached when it will no longer be convenient to operate fromit. Hence the second auxiliary ladder C is employed, which is of thesame shape and is attached on the inner side of the ladders B and B bybeing in this case suspended at its inner side by means of similar hooks3 to appropriate rungs of the supporting-ladders and is held in positionat its outer side by means of the hooks 4 of an appropriate size andlength to enable the auxiliary ladder O to be held horizontally by itand by the hooks 3 when attached to any desired rungs of thesupporting-ladders B and B, instead of by means of the brackets D and D.The only difference between the two constructions is that the auxiliaryladder C is supported from below on the outer faces of the supportingladders on the outer side, while the auxiliary ladder- O' is suspendedon the inner faces of the supporting-ladders by its outer side fromabove.

For the purpose of securely fastening both of the ladders in both formsof construction shown turnbuckles 5 are provided, which are attached atone end to an appropriate rung and at the other end to the outer side ofthe auxiliary ladder and serve to more firmly hold the ladders inposition. These turnbuckles are of the common form and provided withhooks at either end. When the sleeve or nut of the turnbuckle is rotatedin the proper direction, the hooks are drawn toward each other, thusdrawing the auxiliary ladder down firmly in its supports and holding thedifferent elements of the scaffold together. After the ladders have beenarranged as shown by Figs. 1, 3, and 5 planks or boards E may be laid ontop of them, and in this manner a firm and readily adjustable and easilymovable form of scaffold may be set up. When it is desired to shift theplatforms, the turnbuekles 5 are released and the bracket D and D andthe hooks 3 and 4 are respectively shifted to the next lower rung on theladder or the next upper rung, as the case may be, and in this way theplatforms maybe readily raised or lowered, as desired.

The construction requires that at least a pair of supporting-laddersshall be used, exoept where the auxiliary ladders are very short. Thescaffolds may be set up in pairs or in sets of three or more, and anynumber of auxiliary ladders may be employed, of any convenient length,set at any convenient positions which will enable the work to beaccomplished.

After the scaffold is set up and locked by the turnbuckles it may bemoved to any convenient position without being taken apart.

I claim as my invention- 1. The combination of supporting-laddersarranged in sets so as to assume an appropriate position with referenceto a surface in place; an auxiliary ladder arranged to be heldhorizontally at any desired height on the supporting-ladders; S-hooksfor attaching the inner sides of the auxiliary ladder to convenientrungs on the supporting-ladders and a bracket notched at both ends tosupport the outer side of the auxiliary ladder so as to hold it in ahorizontal position and a turnbuckle for drawing and locking the variousparts together after being set up as described.

2. The combination-of supporting-ladders arranged in sets so as toassume an appropriate position with reference to a surface in place; anauxiliary ladder arranged to beheld horizontally at any desired heighton the supporting-ladders; S-hooks for attaching the inner sides of theauxiliary ladder to convenient rungs on the supporting ladders, abracket notched at both ends to support the on ter side of the auxiliaryladder so as to hold it-in a horizontal position; and turnbnckles fordrawing and locking the various parts together after being set up asdescribed.

3. The combination of supporting-ladders arranged in sets so as toassume an appropriate position with reference to a surface in place; anupper auxiliaryladder arranged to be held horizontally, at any desiredheight on outer face of supporting-ladder; S-hooks for attaching saidauxiliary ladder to convenient rungs on the supporting-ladder; a bracketprovided with a suitable notch at either end for holding the outer sideof the auxiliary ladder in a horizontal position; a lower auxiliaryladder arranged to be held horizontally on the inner faces of thesupporting-ladders, short S-hooks for attaching the inner side of theauxiliary ladder to convenient rungs on the supporting-ladders, longerhooks for attaching the outer sides of the auxiliary ladder toappropriate -rungs of the supportingladders so as to hold the former ina horizontal position and turnbuckles for drawing and locking the partstogether after being set up substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 19th day of December, 1899.

HENRY DELANO OARRYL.

WVitnesses:

WILLARD PARKER BUTLER, OHARLEs ENGEL.

